Manuel Lanzini has signed a six-year West Ham contract, according to joint-chairman David Gold.

The 23-year-old attacking midfielder has completed his transfer to the London club for a fee that is expected to amount to £7.5million.

Gold Tweeted on Thursday morning at 9.40am that Lanzini has agreed a deal that runs over six years until 2022 before then deleting the message.

This comes two days after Jack Sullivan, the son of Gold’s fellow chairman David Sullivan, had Tweeted that the Argentine had clinched a four-year deal with the option to extend for a further two years.

“Lanzini is a WHU player for the next 4 seasons, with a further 2 year option,” Sullivan wrote on the social networking site.

The 23-year-old attacking midfielder has been on a season-long loan at West Ham from Al Jazira in the United Arab Emirates and has impressed sufficiently for manager Slaven Bilic to sanction a permanent contract.

The Argentine is set to more than double his current salary of £30,o00-a-week.

Lanzini is a WHU player for the next 4 seasons, with a further 2 year option.#COYI